21614905

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{631}}^1$

素因数の和:697

約数の個数: 32

約数和(自身を含む): 30578688

約数和(自身を除く): 8963783

約数列:

[1, 5, 13, 17, 31, 65, 85, 155, 221, 403, 527, 631, 1105, 2015, 2635, 3155, 6851, 8203, 10727, 19561, 34255, 41015, 53635, 97805, 139451, 254293, 332537, 697255, 1271465, 1662685, 4322981, 21614905]

約数ペア:

[(1, 21614905), (5, 4322981), (13, 1662685), (17, 1271465), (31, 697255), (65, 332537), (85, 254293), (155, 139451), (221, 97805), (403, 53635), (527, 41015), (631, 34255), (1105, 19561), (2015, 10727), (2635, 8203), (3155, 6851)]